A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5930-01-607-1134
NSN 5996-01-380-5946
NSN 5910-01-024-1021
NSN 5945-01-534-2447
NSN 5985-01-044-0448
NSN 4140-00-276-9154
NSN 5915-01-249-0106
NSN 5990-00-366-0112
NSN 7035-00-533-4464
NSN 6220-01-292-0980
NSN 5945-00-144-3186
NSN 5910-01-501-6908